but, dad, you've got... [ voice of dennis ] allstate. with accident forgiveness, they guarantee your rates won't go up just because of an accident. smart kid. [ voice of dennis ] indeed. are you in good hands? >>> miss a "nightline"? want the best of "nightline"? just go to abc.com/watch. set your dvr right now for "nightline." there's nothing in late night like -- >> "nightline." >> "nightline." >> only on "nightline." >>> we turn now to the latest developments surrounding the americans held hostage in north africa by terrorists with links to al qaeda. today after a chaotic rescue attempt, u.s. officials tell nbc news they believe at least three americans remain in captivity. >> reporter: tonight, somewhere in this sprawling natural gas complex in one of the most remote parts of the sahara desert, some americans along with at least 15 others, including british and french, are being held hostage by islamic militants. it began at dawn yesterday, when 20 heavily armed militants attacked buses carrying the americans and other workers around